There are 1.7m registered refugees living in Gaza—constituting more than two-thirds of its population. Most are descendants of the 250,000 Palestinians who were driven from their land to the coastal enclave during what Arabs call the nakba, or “catastrophe”, of 1948 when Israel was created. (More than 750,000 Palestinians were uprooted overall.) Before their arrival, the population of Gaza was only around 80,000. In the aftermath of the Arab-Israeli war of 1948 the United Nations established its Relief and Works Agency for Palestine Refugees (UNRWA) to provide help to those who had been displaced to Gaza and elsewhere. Over the next few years the agency was granted eight plots of land across the enclave; refugees were grouped by their villages of origin and given tents.